Squares - impossible puzzle

A simple to learn, but challenging block puzzle! Can you match the squares?
HOW TO PLAY
Move the squares with the googly eyes to color the white fields with the color of the squares. You cannot move over black fields or through fields of the same color as the square. To complete the level, collect the keys with the same colored square in the correct order.
ABOUT THE GAME
- simple to learn, hard to master
- different levels with different challenges
- no time limit
- if the level is to hard, skip it
- play any level any time again
- 40 unique handcrafted levels
- no in-app purchase
- no advertisement